cinematics for a game's introduction, plot, and ending was a new concept which "naturally impressed the gaming public". The article noted the game's high level of difficulty, saying the game "threw up an immense challenge even for the veteran gamer, and almost dared you to complete it mentally and physically intact". Chris Kohler, in his 2004 book Power-Up: How Japanese Video Games Gave the World an Extra Life, said, while it was not as far-reaching as Tecmo Bowl, "it ended up revolutionizing video games with its courageous, unique, and trailblazing use of cinema scenes". Upon its release on the Virtual Console, Ninja Gaiden was met with high praise, especially for its elaborate story, amount of narrative, and use of anime-like cinematic sequences. Some critics have bemoaned its gameplay for being too similar to Castlevania; similarities include identical displays on the top of the screen, items contained in breakable lanterns, and a nearly identical "secondary weapons" feature. A 1UP.com review noted that the two games have different dynamics and that several actions possible in Ninja Gaiden would be impossible in Castlevania. Contemporary reviews have considered the game "groundbreaking" for its pioneering use of stylized cutscenes, high quality music, and dark atmosphere. One review said that the game makes up for its high difficulty level with good gameplay. IGN said that it is one of the best platform games of all time. Reviewers have criticized the game for its high and unforgiving difficulty level especially late in the game, and it has been considered an example of "Nintendo Hard" video games. A review by 1UP.com referred to the later levels as an "unfair display of intentional cheapness". In his review of the Virtual Console version, GameSpots Alex Navarro said "the game will beat you to a pulp" and that it "assaults you time and time again with its punishing difficulty, insidiously placed enemies, and rage-inducing boss fights". According to his review, the game starts easy, but the difficulty begins to increase halfway through the second Act and continues through the sixth Act; Navarro describes the sixth Act's difficulty as "one of the bottom levels of gaming hell". IGN said that the game was one of the most difficult video games of all time, setting the trend for the rest of the series; however, they pointed out that its difficulty and graphics are "defining characteristics [that] have carried over through the years into